Select the letter-cluster that can replace the question mark (?) in the following series.
FIY, HLD, JOI, LRN, NUS, ?

Select the combination of letters that when sequentially placed in the gaps of the given letter series will complete the series.
cd_ab_cd_abb_dda_b

Which number will replace the question mark(?) in the following number series?
7, 11, 18, 29, ? , 76

Choose the correct alternative from the given ones that will complete the given sequence.
1.5, 2.3, 3.1, 3.9, ?

Choose the correct alternative from the given ones that will complete the given sequence.
ALN, DNP, GPR, ?

Choose the correct alternative from the given ones that will complete the given sequence.
LXF, MTJ, NPN, OLR, ?

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.

? , Hexane, Heptane, Octane

A series is given with one term missing. Choose the correct alternative from the given ones that will complete the series.
EFGHI, LMNO, RST, WX?